kangaroo rat

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Related to Dipodomys: kangaroo rats

kangaroo rat,

small, jumping desert rodent, genus Dipodomys, related to the pocket mousepocket mouse,
small jumping rodent of W North America and as far south as N South America. More closely related to the squirrel than the true mouse, the pocket mouse gets its name from the fur-lined cheek pouches in which it carries its food. It varies in length from 3 to 12 in.
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. There are about 20 kangaroo rat species, found throughout the arid regions of Mexico and the S and W United States. Kangaroo rats have large, mouselike heads with big eyes, external fur-lined cheek pouches for food storage, and extremely long, tufted tails. In many species the tail is longer than the combined head and body length. The total length, including the tail, is 10 to 15 in. (25–37.5 cm), depending on the species. The front limbs are very short and the back limbs extremely long and stiltlike. The animal moves by long leaps, like a kangaroo, using its tail for balance and as a rudder for turning at high speeds. Kangaroo rats have long silky fur, pale brown above and white beneath, with black and white tail tufts and black face markings. Solitary, nocturnal creatures, they live in burrows by day and forage at night for seeds, grass, and tubers. Active hoarders, they sometimes dry their food in shallow pits just below the surface of the ground, then dig it up and store it in their burrows. Like a number of other desert animals, the kangaroo rat has physiological mechanisms for conserving the water that it obtains from food or produces metabollically, so that it does not need to drink. A related genus, Microdipodops, is called the kangaroo mouse, or dwarf kangaroo rat. It is about 6 in. (15 cm) in total length and is found in the Great Basin of the W United States. Kangaroo rats are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Mammalia, order Rodentia, family Heteromyidae.
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References in periodicals archive ?
Behavioural modulation of predation risk: moonlight avoidance and crepuscular compensation in a nocturnal desert rodent, Dipodomys merriami.
Eisenberg (1963) documented interspecific variation among heteromyids in tolerance of conspecifics, with Merriam's kangaroo rats, for example, being more tolerant than Panamint kangaroo rats (Dipodomys panamintinus), a larger species.
In general, kangaroo rats (Dipodomys) and kangaroo mice (Microdipodops) exploit the open microhabitat, and pocket mice (Chaetodipus and Perognathus) and deermice (Peromyscus) exploit the bush (e.g., Rosenzweig and Winakur 1969, Brown and Lieberman 1973, Rosenzweig 1973, 1977, Hutto 1978, M'Closkey 1978, Price 1978, Wondolleck 1978, Bowers 1982, Kotler 1984a, b, but see Thompson 1982 and Brown 1989a).
Thirty-five kangaroo rats (Dipodomys merriami and Dipodomys ordii) were captured in traps which had the tail-saver device.
Differences in maximum movement distances of the more common species (Dipodomys merriami, D.
California on the endangered Morro Bay kangaroo rat (Dipodomys heermanni morroensis).
(2009) Elastic energy storage in the hopping of kangaroo rats (Dipodomys spectabilis).
hispidus, 11 Western Harvest Mice (Reithrodontomys megalotis), 1 Southern Plains Woodrat (Neotoma micropus), and 1 Ord's Kangaroo Rat (Dipodomys ordii).
orbiculare, Barisia imbricata, Dipodomys phillipsii, NOM-059-SEMARNAT-2010).
Behavioural syndromes in Merriam's kangaroo rats (Dipodomys merriami): a test of competing hypotheses.
At present there had many researches, such as short photoperiod had no effect on thermogenesis in Clethrionomys glareolus and Clethrionomys rutilu (Feist and Feist, 1986; Heldmaier et al., 1989), but affected the thermogenesis in Microtus ochrogaster (Wunder, 1985), Dipodomys ordii (Gettinger and Ralph, 1985), Phodpus sungorus (Wiesinger et al., 1989), Acomys cahirinus (Haim and Zisapel, 1999), Meriones unguiculatus (Li and Wang, 2005), Microtus agrestis (Krol et al., 2005) and Apodemus mystacinus (Spiegel and Hsim, 2004).